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    <title>Document</title>
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    <script>
        // 剩余所有的参数以数组形式输出
        function fun(...rest){
            console.log(rest);
        }
        fun(1,2,3,4,5)

        // 剩余部分参数以数组形式输出
        function func(a,b,...now){
            console.log(now);
        }
        func(1,2,3,4,5)


        //展开数组
        const arr =[1,2,3,45,6] 
        console.log(...arr);
        console.log.apply(console,arr)


    </script>
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